=120.= The Athenians replied: “We are not ignorant of the power of the Mede, but for the sake of freedom we will resist that power as we can. Bear back to Mardonius this our answer: So long as yonder sun continues his course, so long we forswear all friendship with Xerxes; so long, confiding in the aid of our gods and heroes, whose shrines and altars he has burnt, we will struggle against him for revenge. As for you, Spartans, knowing our spirit, you should be ashamed to fear our alliance with the barbarian. Send your forces into the field without delay. The enemy will be upon us when he knows our answer. Let us meet him in Bœotia before he proceed to Attica.” =121.= The Athenians had rightly judged the immediateness of the danger. Scarcely was their answer received when the Persian general was in motion, and advanced by rapid marches to the borders of Attica. He was re-enforced at every halt by northern Greeks, moved either by terror of his power or by long-standing jealousies against the members of the League. The Attic territory was utterly desolate and Athens a second time deserted. Taking possession of that city, Mardonius dispatched a Greek messenger to Salamis, repeating his former propositions, which were as instantly rejected as before. The Athenians were a second time homeless, and, for the moment, standing alone against the enemies of Greece. The Spartans were engaged in some long-continued solemnities—perhaps the funeral of their regent, Cleom´brotus—and allowed the Athenian messengers to wait ten days for an answer. Not until the indignant envoys had threatened to make terms with Mardonius and leave Sparta to her fate, did the ephors bestir themselves, but then it was with true Spartan energy and dispatch. Five thousand Spartans and 35,000 slaves were sent, under the command of Pausanias, the new regent, to whom the ephors added a guard of 5,000 heavy-armed Laconians. =122.= Hearing of the advance of the Spartans, the Persian thought best to retreat. He again set fire to Athens, leveled to the ground whatever remained of its walls and temples, and retired into Bœotia. Here he arranged his camp on a branch of the Asopus, not far from the city of Platæa. The Spartans followed, having been joined at the isthmus by the Peloponnesian allies, and, at Eleusis, by the Athenians. The Greek forces occupied the lower slopes of Mount Cithæron, with the river before them, separating them from the Persians.